Asking customers to send money and then screenshot the confirmation works until it does not. A payment link puts the amount, the order and the confirmation in one place.
One link per sale
Create the sale at the till, send the link by text or email and the customer approves on their own phone. The sale closes by itself when the payment is confirmed, so nobody has to check a wallet balance.
Know what you will receive
Fees are shown before you send the link and again on the receipt, so the figure in your records matches the figure in your account.
